The Siemens SITAS 4AM4842-4TN00-0EB0 is a 500 VA single-phase safety isolating transformer that steps down 230 V primary to 24 V secondary for low-voltage control circuits — with the added convenience of DIN rail mounting for snap-on installation. Delivering 20.8 A continuous with 2000 VA short-term capacity, it reliably powers 24 V PLC systems, sensors, actuators, and control electronics in standardized industrial control panels.

Key Features

• DIN rail mountable — snap-on installation without drilling or mounting plates, ideal for standardized control panels
• 24 V secondary at 20.8 A supplies high-current low-voltage control circuits with safe galvanic isolation
• Adjustable primary taps at 218/230/242 V (±5%) accommodate supply voltage variations
• 2000 VA short-term capacity (4× nominal) handles inrush from contactor coils and DC power supply charging
• Safety isolating transformer per EN 61558-2-6 — suitable for SELV/PELV circuits
• Low inrush current design simplifies primary-side protection coordination
• Compact EI 120/72 core: 122 × 121 × 134 mm footprint
• 50/60 Hz dual-frequency operation for global industrial power compatibility
• IP00 open-type construction for enclosed panel or cabinet mounting

Technical Data

Applications

This DIN rail safety transformer is designed for supplying 24 V SELV/PELV control circuits in standardized industrial control panels where rapid DIN rail installation and modular panel design are priorities. The 24 V output powers PLC systems, sensor networks, safety relays, and industrial IoT devices with full galvanic isolation from the 230 V mains. The 20.8 A continuous rating supports installations with numerous 24 V loads, while the snap-on DIN rail mounting eliminates drilling and reduces panel assembly time.